U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
(a) The information in this section is available in the 40 CFR, part 52 edition revised as of July 1, 1999, the 40 CFR, part 52, Volume 1 of 2 (§§ 52.01 to 52.1018) editions revised as of July 1, 2000 through July 1, 2011, and the 40 CFR, part 52, Volume 3 of 3 (§§ 52.2020 to End) editions revised as of July 1, 2012.
(b)-(f) [Reserved]